INDEX 391 
Flat Diatoms, 181, 334 Gallic acid, 141 
Kelps, 200 Gallotannic acid, 141 
Florideae, 207, 338 Gametangia, 200 
Flower, 274, 285 Gametes, 109 
axes, 301 Gametophyte, 110, 242 
Flowering Plant Ancestors, 274, Gamopetalous, 303 
355 Gamosepaly, 304 
Plants, 274, 284, 357 Garden Currant, 309 
*‘Flower’’ of Mosses, 250 Gaura, 370 
Fly Fungi, 336 Gazania, 375 
Foeniculum, 372 Gazanias, 375 
Fomes, 230, 346 Geaster, 231, 345 
Fontinalaceae, 252, 351 Geissolomataceae, 371 
Forget-me-nots, 366 Gelidiaceae, 338 
Formaldehyde, 85, 153 Gemmae, 246 
Formation of New Cells, 19 Genera, 158 
Formic Acid, 140 Generation, 171 
Fossombronia, 349 Genicularia, 333 
Fouquieraceae, 364 Gentiana, 366 
Fragaria, 289, 306, 368 Gentianaceae, 366 
Fragilariaceae, 334 Gentianales, 366 
Frankeniaceae, 364 Geoglossaceae, 342 
Fraxinus, 366 Geoglossum, 342 
Free veins, 257 Geologic time, 161, 162 
Freezing of plants, 96 Georgiaceae, 351 
Froelichia, 365 Geotropism, 125 
Fructose, 18, 145 Geraniaceae, 362 
Fruit, 288 Geraniales, 362 
-spores, 175 Geranium, 302, 362 
Sugar, 145 Geraniums, 362 
Frullania, 349 Gerardia, 367 
Fucaceae, 337 Germination of seed, 281, 288 
Fucales, 201, 337 Gesneraceae, 367 
Fuchsia, 370 Geum, 291 
Fucus, 201, 337 Giant Kelp, 201 
Funaria, 250, 350 Puff-ball, 228 
Funariaceae, 252, 350 Gigartina, 339 
Fungi, 179, 211 Gigartinaceae, 339 
Imperfecti, 213, 347 Gigartinales, 339 
Fungus cellulose, 5, 154 Gilia, 366 
sugar, 146 Gills, 230 
Fusarium, 348 Ginkgo, 275, 355 
Fusel oil, 142 Ginkgoaceae, 355 
Fusicladium, 239, 348 Ginkgoales, 275, 355 
Ginsengs, 372 
G Girdle, 180 
Gladiolus, 319, 360 
Gaillardia, 375 Glaucocystaceae, 167, 332 
Galactose, 145 Glaucocystales, 167, 332 
Galium, 373 Glaucocystis, 167, 332 
Gall-fungi, 172 Gleba, 228 
